topic K10 - Crystal design using internal load capacitors in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/K10-Crystal-design-using-internal-load-capacitors/m-p/250111#M7016 <HTML><HEAD></HEAD><BODY><P>I'm not finding much information on the design alternatives on using a 4.0 mhz crystal with a K10.</P><P></P><P>The several app notes talk about the danger of using too hi a drive but I can't find any thing that helps determine if my application should be set up as lo drive or hi drive.</P><P></P><P>The documents also suggest that the external load resistor and caps may not be required by using the internal caps.</P><P></P><P>Where can I find information that explores those options so I can decide what's acceptable.</P><P></P><P>The User Guide is very - very weak on this subject and the app notes are too general.</P><P></P><P>If anyone has insight or direction - please provide.</P><P></P><P>Thanks.</P><P></P><P>Joe</P></BODY></HTML> Thu, 23 Jan 2014 00:27:03 GMT JHinkle 2014-01-23T00:27:03Z K10 - Crystal design using internal load capacitors https://community.nxp.com/t5/Kinetis-Microcontrollers/K10-Crystal-design-using-internal-load-capacitors/m-p/250111#M7016 <HTML><HEAD></HEAD><BODY><P>I'm not finding much information on the design alternatives on using a 4.0 mhz crystal with a K10.</P><P></P><P>The several app notes talk about the danger of using too hi a drive but I can't find any thing that helps determine if my application should be set up as lo drive or hi drive.</P><P></P><P>The documents also suggest that the external load resistor and caps may not be required by using the internal caps.</P><P></P><P>Where can I find information that explores those options so I can decide what's acceptable.</P><P></P><P>The User Guide is very - very weak on this subject and the app notes are too general.</P><P></P><P>If anyone has insight or direction - please provide.</P><P></P><P>Thanks.</P><P></P><P>Joe</P></BODY></HTML> Thu, 23 Jan 2014 00:27:03 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/K10-Crystal-design-using-internal-load-capacitors/m-p/250111#M7016 JHinkle 2014-01-23T00:27:03Z Re: K10 - Crystal design using internal load capacitors https://community.nxp.com/t5/Kinetis-Microcontrollers/K10-Crystal-design-using-internal-load-capacitors/m-p/250112#M7017 <HTML><HEAD></HEAD><BODY><P>Hi, Joe</P><P>First, crystal loading capacitor value depends on manufacturer specification. If your crystal need loading capacitor is 22pF, you can enable bit SC2P, SC4P and SC16P together. The internal capacitors are paralleled. </P><P></P><P>Hope my reply can help you. </P><P></P><P>Best Regards</P><P>Paul</P></BODY></HTML> Thu, 23 Jan 2014 07:50:18 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/K10-Crystal-design-using-internal-load-capacitors/m-p/250112#M7017 Paul_Tian 2014-01-23T07:50:18Z